The New York Stock Exchange has halted all trading of listed stocks today at 0851 PDT, 1150 EDT. The NYSE, owned by Intercontinental Exchange, has blamed technical gremlins.

Is a technical gremlin, a zeroday vulnerability exploiter/export/extorter? Or is that more of a software glitch chasing trade for a hardware patch? Collapsing markets need to know. Although what, if anything, can be done about such novel things is certainly unclear and quite a cause for real concern in any and all virtual market places with open and closing cyber spaces.